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$48+ Cheap flights from California to St. Louis (STL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/28. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — STL
feb. 4 — feb. 111
mar. 2/4
mar. 2/11
1 adult, Economy
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Cheap flight deals from California to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from California (USCA) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated enero 30, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$110
(Frontier)

One-way from

$48
(Trip.com)

Popular in

December

Cheapest in

August

Average price

$431

Good round-trip deal

$329 or less

Good one-way deal

$179 or less
Provider with most accurate pricing for Los Angeles-Lambert-St Louis flight deals.
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Provider most trusted by Cheapflights users for Los Angeles-Lambert-St Louis flights.
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From California to Lambert-St Louis
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One-way flight from California to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($39 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in January 2025
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Price to beat on a round-trip flight from California to Lambert-St Louis.
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Price to beat on a one-way flight from California to Lambert-St Louis.
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Find flight deals from California to St. Louis

Cheapest flights from California to St. Louis
Explore the most affordable flight options available from California to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on enero 30, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 1/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 2/209:48 pmLAS - STL
1 stop9h 28mFrontier
dom. 2/2311:08 pmSTL - LAS
Nonstop3h 49mFrontier
Deal found 1/29$109
This Frontier deal was found by Cheapflights users on 1/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 2/2010:24 amONT - STL
1 stop9h 44mFrontier
sáb. 3/17:04 pmSTL - ONT
1 stop7h 05mFrontier
Deal found 1/29$110
This CheapOair deal was found by Cheapflights users on 1/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 2/233:34 pmSMF - STL
1 stop15h 42mFrontier
mié. 2/266:43 pmSTL - SMF
1 stop26h 13mFrontier
Deal found 1/29$140
This Booking.com deal was found by Cheapflights users on 1/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 4/2412:20 pmSNA - STL
1 stop19h 41mFrontier
dom. 4/279:55 pmSTL - SNA
1 stop22h 53mFrontier
Deal found 1/30$140
This Priceline deal was found by Cheapflights users on 1/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 3/710:30 pmLAS - STL
1 stop8h 39mMultiple Airlines
lun. 3/106:58 pmSTL - LAS
1 stop6h 56mMultiple Airlines
Deal found 1/29$176
This CheapOair deal was found by Cheapflights users on 1/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 4/32:35 pmLAX - STL
1 stop16h 31mFrontier
dom. 4/612:37 pmSTL - LAX
1 stop13h 48mFrontier
Deal found 1/30$180
This CheapOair deal was found by Cheapflights users on 1/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/12:35 pmLAX - STL
1 stop16h 31mMultiple Airlines
dom. 4/66:47 pmSTL - LAX
1 stop17h 11mMultiple Airlines
Deal found 1/29$209
This American Airlines deal was found by Cheapflights users on 1/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 3/3111:59 pmSMF - STL
1 stop8h 39mAmerican Airlines
jue. 4/35:37 pmSTL - SMF
1 stop8h 52mAmerican Airlines
Deal found 1/30$247
This Booking.com deal was found by Cheapflights users on 1/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 5/154:17 pmSFO - STL
1 stop14h 52mFrontier
lun. 5/195:47 pmSTL - SFO
1 stop21h 11mFrontier
Deal found 1/30$250
This Delta deal was found by Cheapflights users on 1/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/210:40 pmSMF - STL
1 stop7h 26mDelta
sáb. 9/62:18 pmSTL - SMF
1 stop9h 37mDelta
Deal found 1/29$257
This Delta deal was found by Cheapflights users on 1/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/2910:10 amSJC - STL
1 stop5h 53mDelta
mar. 11/41:30 pmSTL - SJC
1 stop8h 20mDelta
Deal found 1/30$257
This Mytrip deal was found by Cheapflights users on 1/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 2/2411:30 pmLAX - STL
2 stops13h 12mSpirit Airlines
jue. 2/274:00 pmSTL - LAX
3 stops22h 53mSpirit Airlines
Deal found 1/30$258

Find flights from California to St. Louis within your budget

Customize your flight search to find flights from California to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated enero 30, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

OntarioSt. Louis

ONT - STL

ONTSTL

Ontario

jue. 2/20

10:24 am-10:08 pm

1 stop9h 44m

Lambert-St Louis

sáb. 3/1

7:04 pm-12:09 am

1 stop7h 05m

$110

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

jue. 2/20

6:00 am-9:16 am

1 stop25h 16m

Lambert-St Louis

dom. 2/23

11:08 pm-12:57 am

Nonstop3h 49m

$111

SacramentoSt. Louis

SMF - STL

SMFSTL

Sacramento Intl

dom. 2/23

3:34 pm-9:16 am

1 stop15h 42m

Lambert-St Louis

mié. 2/26

6:43 pm-6:56 pm

1 stop26h 13m

$140

Santa AnaSt. Louis

SNA - STL

SNASTL

Santa Ana J. Wayne/Orange Cnty

jue. 4/24

12:20 pm-10:01 am

1 stop19h 41m

Lambert-St Louis

dom. 4/27

9:55 pm-6:48 pm

1 stop22h 53m

$140

Los AngelesSt. Louis

LAX - STL

LAXSTL

Los Angeles

jue. 4/3

2:35 pm-9:06 am

1 stop16h 31m

Lambert-St Louis

dom. 4/6

12:37 pm-12:25 am

1 stop13h 48m

$180

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

lun. 4/7

10:30 pm-5:52 pm

1 stop17h 22m

Lambert-St Louis

lun. 4/14

6:51 pm-11:49 pm

1 stop6h 58m

$233

Los AngelesSt. Louis

LAX - STL

LAXSTL

Los Angeles

mar. 3/4

10:48 pm-12:10 pm

2 stops11h 22m

Lambert-St Louis

mar. 3/11

5:38 pm-9:18 pm

2 stops29h 40m

$240

SacramentoSt. Louis

SMF - STL

SMFSTL

Sacramento Intl

lun. 3/31

11:59 pm-10:38 am

1 stop8h 39m

Lambert-St Louis

jue. 4/3

5:37 pm-12:29 am

1 stop8h 52m

$247

San FranciscoSt. Louis

SFO - STL

SFOSTL

San Francisco

sáb. 4/5

6:00 am-11:37 am

1 stop27h 37m

Lambert-St Louis

sáb. 4/12

6:51 pm-9:02 am

1 stop16h 11m

$251

Los AngelesSt. Louis

LAX - STL

LAXSTL

Los Angeles

lun. 2/24

11:30 pm-2:42 pm

2 stops13h 12m

Lambert-St Louis

jue. 2/27

4:00 pm-12:53 pm

3 stops22h 53m

$258

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/30

Showing 1-10 of 60 results
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Best time to book a flight from California to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from California with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from California to St. Louis

Get recent, data-driven insights about flights from California to St. Louis including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from California to St. Louis?

Currently, August is the cheapest month in which you can book a flight from California to St. Louis (average of $311). Flying from California to St. Louis in March is currently the most expensive (average of $356). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from CA to STL?

Find hourly flight availability from California to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated enero 30, 2025.

When flying from California to St. Louis, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated enero 30, 2025.
See what other customers who have flown with Southwest, Alaska Airlines and Delta from California to St. Louis have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,585 reviews

Boarding

8.2

Comfort

8.1

Entertainment

7.7

Crew

8.7

Overall

8.1

Food

7.1

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Southwest
8.1
Very good
4,585 reviews
Southwest
8.1
Very good
4,585 reviews

Boarding

8.2

Comfort

8.1

Entertainment

7.7

Crew

8.7

Overall

8.1

Food

7.1

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Alaska Airlines
8.0
Very good
9,686 reviews
Southwest
8.1
Very good
4,585 reviews

Boarding

8.2

Comfort

8.1

Entertainment

7.7

Crew

8.7

Overall

8.1

Food

7.1

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Delta
8.0
Very good
8,450 reviews
Southwest
8.1
Very good
4,585 reviews

Boarding

8.2

Comfort

8.1

Entertainment

7.7

Crew

8.7

Overall

8.1

Food

7.1

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

United Airlines
7.4
Good
8,906 reviews
Southwest
8.1
Very good
4,585 reviews

Boarding

8.2

Comfort

8.1

Entertainment

7.7

Crew

8.7

Overall

8.1

Food

7.1

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,585 reviews

Boarding

8.2

Comfort

8.1

Entertainment

7.7

Crew

8.7

Overall

8.1

Food

7.1

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Related info for your journey

Find useful and relevant information for your journey from California to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to St. Louis from California?

    Lambert-St Louis (STL), located 12.7 mi from the city center, is the airport you fly into when you book flights from California to St. Louis.

  • How popular is this California to St. Louis flight route?

    The California to Lambert-St Louis flight path was viewed by 17 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • What are the cheapest airlines to fly from California to St. Louis one-way?

    The cheapest airlines for a one-way flight from California to St. Louis are Frontier ($48), Spirit Airlines ($104), and Alaska Airlines ($118).

  • What are the most popular routes from California to St. Louis?

    The most popular route from California to St. Louis is Los Angeles - Lambert-St Louis. You may also consider San Francisco - Lambert-St Louis or Ontario - Lambert-St Louis.

  • What are the most reliable airlines from California to St. Louis?

    The top 3 most reliable airlines when flying from California to St. Louis are SkyWest Airlines (100%), American Airlines (75%) and Southwest (70%).

  • What are the cheapest flights from California to St. Louis?

    Looking for the cheapest flight from California to St. Louis? While on average our users pay $343, our data indicates the cheapest price to be $179. The most popular route (Los Angeles - Lambert-St Louis), is priced around $204.

  • Can I find deals for flights from California to St. Louis that include hotel bookings?

    Yes. In addition to deals on California to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from California to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from California to St. Louis.

  • Can I find deals for business class flights from California to St. Louis?

    Yes. Cheapflights offers flight deals from California to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from California to St. Louis?

    Currently, August is the cheapest month in which you can book a flight from California to St. Louis (average of $311). Flying from California to St. Louis in March is currently the most expensive (average of $356). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near California?

Book flights to California if you plan to visit one of these locations
Fenton
Fairview Heights
Maryland Heights
Collinsville
Wentzville
Eureka
St. Peters
Festus
Alton
Farmington
Chesterfield

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Alternative routes for California to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
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Top 7 airlines flying from California to St. Louis

Discover the top 7 airlines that operate flights from California to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated enero 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$97Average$221FlexibilityNo cancel feeOn-time65%
FrontierCheapest$102Average$205FlexibilityNo cancel feeOn-time62%
DeltaCheapest$203Average$391FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$216Average$398FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$235Average$443FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$272Average$470FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$327Average$737FlexibilityNo cancel feeOn-time75%
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